Rachel S. Yang

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Raman spectra of single-wall carbon nanotubes ~SWCNTs! were measured at different temperatures by varying the incident laser power. The elevated temperature of the SWCNTs and multiwall carbon nanotubes ~MWCNTs! is confirmed to be due to the presence of impurities, defects, and disorder. The temperature coefficient of the frequency of the C–C stretching mode(More)
Paratyphoid fever A (PA) is a systemic infection caused by Salmonella enterica serotype Paratyphi A (SPA) [1]. Although blood cultures are considered to be the ‘gold standard’ for the detection of bloodstream pathogens, there is little information on the controlled clinical comparison of the paired aerobic and anaerobic bottles in the automated continuously(More)
Power converters requiring wide voltage and power ranges (including power factor correction converters) are difficult to effectively implement with soft switching at high frequencies, limiting their density and/or efficiency. We propose a softswitched converter that can operate at HF (3–30MHz) across wide input voltage and power ranges. A prototype(More)
SnO2 nanowires were prepared on bare oxidized silicon, Au and SnO2 coated substrates by thermal evaporation of tin grains in argon atmosphere at 900°C. X-ray diffraction (XRD) and field-emission scanning electron microscopy (FE-SEM) were used to characterize the SnO2 nanowires. FE-SEM images indicated that the size of SnO2 nanowires depend on the type of(More)
A newly designed goniometer is presented for rapid and accurate measurement in the orthopaedic practice. This new instrument consists of two extensible arms with special calibrations. With proper adjustment of these arms, common and specific angles, such as the Cobb angle, can be measured easily and accurately. Specific calculations of various indices can(More)
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